- When they built the Great Wall of China, the workers were angered and resentful and it strained the economy.
- People would break their limbs and injure themselves and break laws to avoid going into the military.
- One of it's Emperors, Emperor Yang, spent a lot of money and his was really cruel to the people.
- It had a short "lifetime".
- They attacked Korea four times, and Korea defeated them all those times.